The PHP Functions Essential Reference is a simple, clear and authoritative function reference that clarifies and expands upon PHP's existing documentation.The authors have spent time evaluating all of the PHP functions and have selected the essential functions to include in the printed book.

If you're a programmer looking for the most effective uses of PHP, this book will provide you with:

A clear guide to common function usage and pitfalls

Easy to find, detailed information on the most important PHP functions

Practical examples of each function's use

Overview's that discuss how and why to use a particular group of functions

Practical, complete documentation on powerful but obscure functions such as pack and unpack